seniorKotlin
What is the role of Dispatchers in Kotlin coroutines?
Updated May 16, 2026
Short answer
Dispatchers define which thread or thread pool a coroutine runs on.
Deep explanation
Kotlin provides Dispatchers.Main (UI thread), IO (blocking IO tasks), Default (CPU-intensive work), and Unconfined (no fixed thread). Proper dispatcher selection is critical for performance and avoiding UI blocking or thread starvation.
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